Diamond Hotend parts

by kharar, published

Diamond Hotend parts by kharar Mar 24, 2015
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This is the Diamond Hotend kit that I developed while working for RepRap.me Since then I have moved on with a completely different job and this thing will not be updated any further by me, therefore If you have any suggestions or questions please forward them to [email protected]


This is an OpenSCAD script which holds a mock-up of the metal parts of the Diamond Hotend.

The script also holds routines to generate the structure (also denoted Cooling Shield) needed for appropriate cooling of the Diamond Hotend's three E3D HeatSinks using by a single high-output 50 mm fan.

Furthermore it has an option for a 5015 blower pendant to allow for active cooling of the printed material.
Enable this by setting:
blower_enable = true;

Metal parts mock up made for the purpose of subtraction from your custom design.
This part is made with the scad script by defining:
assembled = false;
metalPartsOnly = false;

The above configurations have been exported into STL-files.
Please feel free to fetch the OpenSCAD script and make as many derivates to fit your printer(s) as you like, but please keep a reference to this thing.

For further information please visit http://reprap.org/wiki/Diamond_Hotend
or http://reprap.me/extruder/diamond-hotend.html

Basics of the construction:

Diamond_Hotend page on reprap org has a link to Diamond_Nozzle.pdf with drawings and specification of distances.

Each M6 mounting hole for cooling towers are leaning out 28 degrees from the centre and are spaced 120 degrees apart.

From the origin (the point where all the lines meet) there is a distance of 24 mm to the beginning of each M6 threaded hole (which itself is 6 mm deep measured from the most distant point on the upper surface)

Dimensions of the E3D LiteV6 can be found on the E3D homepage.

Of course the diamond_hotend_assembly.scad also contains all this information (if you can decode it) :-)

Q: is there a nozzle .stl available?

A: Not really -but if you

  • download and install the latest version of OpenSCAD
  • open "diamond_hotend_assembly.scad"
  • set "metalPartsOnly = true;" on line 14
  • add "//" on line 87 so that it reads "//coldend();"
  • hit F6 to render and click "File"-"Export"-"Export as STL..."

then you can generate your own "nozzle.stl" :)

  • Or you could just take a look at "diamond_cooler_metal_parts_only.stl"

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Has anyone designed an attachment for an autolevel sensor in addition to the blower?

Has anyone tried RAL color already?Or a script for rgb color codes

Please note that it is not possible to achieve full color with 3-in-1-out diamond hot end. Even if you feed it with CMY filaments, you will still lack the K component for printing in pitch black, and what is way more important - the W component. When you print with a CMYK ink jet or laser printer on paper, the paper is white. When you print with CMY from a diamond hotend, there is no white base and so you can't achieve light hues. I know that currently reprap.me offers a 5-in-1-out hotend that should solve this problem (provided that it can actually evenly mix the incoming colors, which I doubt), however you will need a compatible control board and a compatible slicer, which I don't know of.

I've problems with the temperature of the hotend.
The hotend wil only become 121 degrees.

Comments deleted.

Hi Leon, is it the original kit from RepRap.me? Because that's the only one I know for sure how is really performing. Regrettably I never got to test any of the knock-offs.

First check the voltage at heater terminals when heating, should be close to 12V.
Then check that you applied enough of the heat conductive paste to the heater.
Also check that you installed the thermal insulation sheet according to the instructions.

Since I am no longer working on this project if you have further questions I suggest you email them to [email protected]

Can you release step files, i need to make a kossel mount of this. thanks.

Can you release step files, i need to make a kossel mount of this. thanks.

Can you release step files, i need to make a kossel mount of this. thanks.

Can you release step files, i need to make a kossel mount of this. thanks.

Can you release step files, i need to make a kossel mount of this. thanks.

Because this thing was developed using OpenSCAD, there are no step files.

Is there a mount to fit UM2?

search and you shall find my friend :)

Hi, is possible to have all quote for redraw the hotend?

Please mail your question to [email protected]

Hi friend... You have this in solidworks format ?

Because this thing was developed using OpenSCAD, there are no solidworks files.

Any ideas on how to use the Z probe holder?

Nope, if you are thinking about the pendant, that is made to fit a fan...

What size fan mounts on top of this?


i improve the diamond hotend it can go up to 5 filaments and have a cap. so you can change the tip of the nouse and for leaning it will be esai

Martin 5 feeder diamond hotend
by loco12

You should try posting this at www.facebook.com/groups/diamondhotend/
There are already several design ideas.. :)

Comments deleted.

Can i use this as a dual? Does a tube and filament have to be on all 3 hotend?
or can i just set it up for 2 hotends?

Yes, you need all three to be loaded, you do not however need all three filaments to extrude

Yeah, I found that out the hard way.. lol

Can this fit on a Rostock MAX v2?

I am not familiar with the specifics that particular printer, but you should be able to further develop some of the designs here on Thingiverse in order to make a fit.

well thanks very kind

hello I wanted to know if the file in question is based on heat sinks E3D V6 long or short, or indifferent? thank you

It was made with the standard E3D-v6 and E3D-Lite6 in mind :)

Comments deleted.

Does anyone have a set of technical drawings for the hotend that I could look at to design a mount for the Rigidbot?

I have updated the thing description, you may find the answers to your question there

Would it be possible to have the STEP/STP/IGES files of each componnent, it is a far better file type for those who use different cad softwares

Sorry, there are no step files because the source code is written in OpenSCAD. You could render and export each component to the CSG format if you wish, I guess this is the closest one can get...

FreeCAD can turn OpenSCAD source into STEP - pretty painless actually

what is the tobera? how is this assembled for the hot end? or, is it part of the blower fan? I am in the process of trying to uild one of a delta, and I can't see how the hole in the center of the tobera lines up to anything in particular. Could you help clarify, or show a pic? thanks!

Tobera is the nozzle part of the blower fan solution, the hole lines up with a hole in the blower plate which is currently included in the diamond_cooler_shield_blower.stl

Yes, if someone designs a way to mount it in the Lulzbot Mini... That shouldnt be too hard.

Can this be installed on the Lulzbot Mini?

Anxiously waiting for mine to ship - can't wait !!